Astronomy Picture of the Day · July 31, 2004

Tonight: A Blue Moon

The Astronomy Picture of the Day for July 31, 2004 is “Tonight: A Blue Moon,” an image. The picture is copyrighted by its creator (Credit & Copyright: Vic Winter ( ICSTARS )). The original explanation runs about 206 words.

From the explanation

“How often does a full moon occur twice in a single month? Exactly once in a Blue Moon .”

— APOD editors, July 31, 2004

Read the full explanation on science.nasa.gov

At a glance

Date: July 31, 2004
Type: Image
Credit: Credit & Copyright: Vic Winter ( ICSTARS )
Copyright: Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length: About 206 words